The Zelen design may be the best choice for a heroin-provision experiment

R Schellings, AG Kessels, G ter Riet, F (Ferd) Sturmans

Research output: Contribution to journalArticleAcademicpeer-review

16 Citations (Scopus)
Original languageUndefined/Unknown
Pages (from-to)503-507
Number of pages5
JournalJournal of Clinical Epidemiology
Volume52
Issue number6
Publication statusPublished - 1999

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